Ca-Na-N-H system for reversible hydrogen storage

被引：28

作者：

Xiong, Zhitao

Wu, Guotao

Hu, Jianjiang

Chen, Ping

机构：

[1] Natl Univ Singapore, Dept Phys, Singapore 117542, Singapore

[2] Natl Univ Singapore, Dept Chem, Singapore 117542, Singapore

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2007年 / 441卷 / 1-2期

关键词：

amide; hydride; hydrogen storage;

D O I：

10.1016/j.jallcom.2006.07.129

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ca-Na-N-H system was introduced and evaluated in this paper for reversible hydrogen storage. Similar to other amide-hydride systems already reported, interaction between Ca(NH,)2-NaH (1/1) was observed in the temperature range of 120-270 degrees C with 1.1 wt% of hydrogen desorption, from which 0.96 wt% of hydrogen can be recharged. XRD and FTIR identified NaNH2 and Ca-N-H solid solution as dehydrogenation products. Concurrent with hydrogen absorption/desorption transformation between -NH and -NH2 units within solid solution was observed. (C) 2006 Elsevier B.V. All rights reserved.

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收藏

页码：152 / 156

页数：5

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